1. Needle roller bearings needle roller bearings
Needle roller bearings are equipped with thin and long roller (roller length for the diameter of the 3 ~ 10 times, the diameter of the general is not greater than 5mm), so the radial structure of the compact, and the size of its inner diameter and load capacity and the same as the other types of bearings, the smallest outside diameter, especially suitable for the radial mounting dimensions of the supporting structure of the limitations. Needle roller bearings according to the use of different occasions, can choose no inner ring bearings or needle roller and cage assembly, at this time and bearing with the journal surface and shell hole surface directly as the bearing of the inner and outer rolling surface, in order to ensure the load capacity and running performance and with collar bearings the same, the shaft or shell hole raceway surface hardness, machining accuracy and surface quality should be with the bearing collar. Usage combination needle roller bearing is by the centripetal needle roller bearing and thrust bearing parts combination of bearing unit, its structure is compact and small volume, high rotational accuracy, can withstand high radial load at the same time to bear a certain amount of axial load. And the product structure of various forms, wide adaptability, easy to install. Combined needle roller bearings are widely used in machine tools, metallurgical machinery, textile machinery and printing machinery and other mechanical equipment, and can make the mechanical system design is very compact and dexterous.
2. self-aligning ball bearings
Spherical ball bearings: two raceways of the inner ring and raceway for the spherical outer ring, assembled with a drum-shaped roller bearings. The curvature center of the outer raceway surface and the bearing center, so it has the same self-aligning ball bearings with the same adjusting function. In case of deflection of shaft and shell, it can be adjusted automatically without increasing the burden of bearings. Spherical roller bearings can withstand radial load and axial load in two directions. Spherical ball bearings have large radial load capacity and are suitable for cases with heavy loads and shock loads. Bearings with tapered bore inner diameter of inner ring can be mounted directly. Or use the tightening sleeve, dismantling cylinder mounted on the cylindrical shaft. The cage is made of steel plate stamping cage, polyamide molding. Self-aligning ball bearings are suitable for bearing heavy loads and shock loads, precision instruments, low noise motors, automobiles, motorcycles, metallurgy, rolling mills, mines, petroleum, paper, cement, sugar and other industries and general machinery.
3. Deep groove ball bearings
Principle of operation: deep groove ball bearings are mainly used to bear radial loads, but also can be used to bear radial loads and axial loads at the same time. When it only bear radial load, the contact angle is zero. When the deep groove ball bearing has a large radial clearance, has the performance of angular contact bearings, can withstand a large axial load , deep groove ball bearing friction coefficient is very small, the limit speed is also very high.
SKF deep groove ball bearings have deep groove type continuous uninterrupted raceway. There is a very good fit between the raceway and the balls, which enables the bearing to withstand radial and axial loads in both directions. These bearings are very versatile and extremely simple in design and non-separable Suitable for high speed and ultra-high speed environments Stable in operation and basically do not require any maintenance from a maintenance point of view. Deep groove ball bearings are also the most widely used type of bearing. Therefore, SKF offers a wide range of designs, varieties, series and sizes of bearings. SKF deep groove ball bearings are suitable for shaft diameters ranging from 3 to 1500 mm. They are supplied in three performance classes:
SKF high-quality standard bearings
SKF high-load-capacity Explorer bearings [1]
SKF energy-saving energy-efficient (E2) bearings
SKF also produces engineered solutions for specific applications, including the following:
SKF Bearings for Extreme SKF Bearings for Extreme Temperatures
SKF DryLube Bearings
SKF Bearings with Solid Oil
SKF Bearings with Insulation
SKF Polymer Bearings
SKF NoWear Bearings
SKF Sensor Bearing Units
4. Spherical Roller Bearings
Spherical roller bearings are used in applications where there is a high degree of mechanical stress on the bearing. Spherical roller bearings are bearings with drum-shaped rollers assembled between the inner ring with two raceways and the outer ring with spherical raceways.
Spherical roller bearings have two rows of rollers, mainly to withstand radial load, but also can withstand any direction of the axial load. Have high radial load capacity, especially suitable for heavy load or vibration load work, but can not bear pure axial load. This type of bearing outer ring raceway is spherical, so its centering performance is good, can compensate for coaxiality error.
Spherical roller bearings have two symmetrical spherical roller, the outer ring has a *** with the spherical raceway, the inner ring has two with the bearing axis tilted at an angle of the raceway, has a good centering performance, when the shaft bending or installation of the bearing is not centered when the bearings can still be used normally, the centering with the different bearing size series, the general allowable centering angle of 1 ~ 2.5 degrees, the type of bearings. Load capacity is larger, in addition to bear radial load bearing can also withstand two-way action of the axial load, has a good impact resistance, generally speaking, spherical roller bearings are allowed to work at a lower speed.
Double row tapered roller bearings spherical roller bearings according to the shape of the roller cross-section is divided into symmetrical spherical roller and asymmetric spherical roller two different structures, asymmetric spherical roller bearings belong to the early products, mainly for the maintenance of the host service, the new design of the host is seldom use symmetric spherical roller bearings, internal structure after comprehensive improvement design and parameter optimization, and the early production of the spherical roller bearing Compared with the early production of spherical roller bearings, can withstand greater axial load, this bearing running temperature is lower, so can adapt to the requirements of higher speeds, according to the inner ring with or without the edge and the use of different cage can be divided into C-type and CA-type two kinds of C-type bearings are characterized by the inner ring without the edge and the use of steel stamping cage, CA-type bearings are characterized by both sides of the inner ring have edge and the use of the car-made entity cage in order to improve the lubrication of the bearing, the outer ring can be provided to the user with a ring, the outer ring has a ring, the outer ring has a ring, the outer ring has a ring, the outer ring is provided to the user with a ring. Can provide users with outer ring with ring-shaped oil groove and three oil holes of spherical roller bearings, to bearings after the code / W33 said, according to user requirements can also supply with inner ring oil holes of spherical roller bearings, in order to facilitate the customer loading and unloading and replacement of bearings, but also can provide with taper of the inner hole of the spherical roller bearings bearings bearings, taper hole taper of 1:12 after the code for the K said, in order to adapt to the requirements of special users also Can provide 1:30 bore taper bearings, its rear code for K30 bore with taper bearings can be used to lock nut will be mounted directly on the tapered journal bearings, but also with the help of the tight sleeve or back off the sleeve will be mounted on the cylindrical journal bearings.
Thrust bearings are divided into two parts: tight ring and live ring. Tight ring and shaft sleeve tight, live ring support in the bearing seat. The collar and rolling body is usually high strength, wear resistance of rolling bearing steel manufacturing, quenching surface hardness should reach HRC60 ~ 65. keep frame is made of soft steel stamping, can also be made of copper alloy cloth cloth or plastic and other manufacturing.
5. Thrust roller bearings
The rolling body is a roller thrust rolling bearing.
6. Linear bearings
Linear bearings are divided into metal linear bearings and plastic linear bearings
Metal linear bearings are a low-cost production of linear motion systems for unlimited travel and cylindrical shafts with the use. Since the load-bearing balls are in point contact with the shaft, the load used is small. The balls rotate with very little frictional resistance, enabling smooth motion with high precision.
Plastic linear bearing is a kind of self-lubricating characteristics of linear motion system, which is the biggest difference between the metal linear bearing is metal linear bearing is rolling friction, bearing and cylindrical shaft is a point contact, so this is suitable for low load high-speed movement; and plastic linear bearing is sliding friction, bearing and cylindrical shaft is surface contact, so this is suitable for high load in low-speed movement;
Thrust cylindrical roller bearing is a kind of self-lubricating characteristic of linear motion system, which is a kind of self-lubricating characteristic of linear motion system. >Thrust cylindrical roller bearings Spherical roller bearings rolling body is cylindrical roller thrust rolling bearings. Thrust tapered roller bearings: rolling body is tapered roller thrust rolling bearings.
7. Thrust needle roller bearings
The rolling body is needle roller thrust rolling bearings.
8. Thrust spherical roller bearings
The rolling body is convex spherical or concave roller spherical roller spherical roller bearings. There are convex spherical roller bearing seat ring raceway is spherical shape, there are concave spherical roller bearing shaft ring raceway is spherical shape.
9. bearing with seat
The centripetal bearing and the seat combination of an assembly, in parallel with the axis of the bearing on the support surface has a mounting screws on the base plate.
10.joint bearing
Thrust ball bearing sliding contact surface for the sphere, mainly suitable for swinging motion, tilting motion and rotary motion of the spherical plain bearing.
11.combination bearings
bearing a set of bearings at the same time by the above two or more forms of bearing structure combination of rolling bearings. Such as needle roller and thrust cylindrical roller combination bearings, needle roller and thrust ball combination bearings, needle roller and angular contact ball combination bearings.
Other bearings: in addition to the above other structure of the rolling bearing.
Sliding bearings: sliding bearings are not divided into inner and outer rings and have no rolling bodies, generally made of wear-resistant materials. Commonly used in low speed, heavy load and lubrication and maintenance of difficult mechanical rotation parts.
12. rolling mill bearings
Tapered roller bearings rolling mill bearings are generally only used to bear radial load, and the same size of deep groove ball bearings, compared with a larger radial load capacity, the limit of the speed close to the deep groove ball bearings, but with this type of bearings with the axle ﹑ shell hole of the processing requirements of the higher, allowing the inner circle axis and the axis of the outer circle axis of the inclination of a very small degree (2 ° -4 °), the two axial tilting such as exceeding the limit, roller, the roller, the roller, the roller, the roller, the roller, and the roller. Tilt such as beyond the limit, roller and ring raceway contact will deteriorate, seriously affecting the load capacity of the bearing, reducing the service life of the bearing. So this kind of bearing if need to install in bear axial load in the host parts, only in the same time use other types of bearings to bear axial load under the premise, can be used.
13. Angular contact ball bearings
Generally used to be called 36, 46-type bearings as the representative of the six types of bearings, angular contact is generally 15 degrees, 25 degrees, 45 degrees, etc..
Types of spherical ball bearings
Bearing with seat spherical ball bearings
With vertical seat spherical ball bearings
With square seat spherical ball bearings
With rhombus seat spherical ball bearings
With tab round seat spherical ball bearings
With ring seat spherical ball bearings
With slide seat spherical ball bearings
With slide seat external Spherical Ball Bearing
Outer Spherical Ball Bearing with Suspended Seat
Outer Spherical Ball Bearing with Suspended Seat
Outer Spherical Ball Bearing with Adjustable Rhombic Seat
Outer Spherical Ball Bearing with Pressed Seat
Outer Spherical Ball Bearing with Other Seat
Thrust Angular Contact Ball BearingThrust angular contact ball bearingThrust Angular Contact Ball BearingThrust Angular Contact Ball BearingThrust Angular Contact Ball BearingThrust Angular Contact Ball BearingThrust Angular Contact Ball BearingThrust Angular Contact Ball BearingThrust Angular Contact Ball BearingThrust Angle of contact angle generally for the 60 ° common Thrust angular contact ball bearings are generally two-way thrust angular contact ball bearings, mainly used in precision machine tool spindles, generally used in conjunction with double-row cylindrical roller bearings, can withstand two-way axial load, with high precision, good rigidity, low temperature rise, high speed, easy to install and dismantle and other advantages.
Deep groove ball bearings